<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script type="text/javascript">
        //sessionStorage 不能跨页面,也不能跨浏览器
        //localStorage 可以跨页面,不能跨浏览器
        /* function add() {

             sessionStorage.setItem("user","{'name':'zs','age':18}")
         }
         function del() {
            sessionStorage.removeItem("user")
         }
         function update() {
             sessionStorage.setItem("user","{'name':'ls','age':18}")
         }
         function get() {
             alert(sessionStorage.getItem("user"));
         }*/

        function add() {

            localStorage.setItem("user","{'name':'zs','age':18}")
        }
        function del() {
            localStorage.removeItem("user")
        }
        function update() {
            localStorage.setItem("user","{'name':'ls','age':18}")
        }
        function get() {
            alert(localStorage.getItem("user"));
        }
    </script>
</head>
<body>
<input type="button" value="add" onclick="add()">
<input type="button" value="del" onclick="del()">
<input type="button" value="update" onclick="update()">
<input type="button" value="get" onclick="get()">
</body>
</html>